Hi Tony,
I have already got the book and made the two models in 1/35 scale pictured below. First is the Ford Semi with load of barrels as per the AWM photo in the first post and the second the original Convoy fitters Chev before CMP's became availiable.
Just love the photos you posted of the Maple Leaf Chev and I would say it is more likely to be a 148 General Transport Co.
PS> the Ford Semi and trailer is totally scratch built including the V8 motor complete with wiring. The fitters truck has a Tamiya GMC motor, headlights and wheels but is otherwise scratch built.
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Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"